論文

2022年9月13日

Building a decoder of perceptual decisions from microsaccades and pupil size

Frontiers in Psychology
  • Ryohei Nakayama
  • ,
  • Jean-Baptiste Bardin
  • ,
  • Ai Koizumi
  • ,
  • Isamu Motoyoshi
  • ,
  • Kaoru Amano

13
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.3389/fpsyg.2022.942859
出版者・発行元
Frontiers Media SA

Many studies have reported neural correlates of visual awareness across several brain regions, including the sensory, parietal, and frontal areas. In most of these studies, participants were instructed to explicitly report their perceptual experience through a button press or verbal report. It is conceivable, however, that explicit reporting itself may trigger specific neural responses that can confound the direct examination of the neural correlates of visual awareness. This suggests the need to assess visual awareness without explicit reporting. One way to achieve this is to develop a technique to predict the visual awareness of participants based on their peripheral responses. Here, we used eye movements and pupil sizes to decode trial-by-trial changes in the awareness of a stimulus whose visibility was deteriorated due to adaptation-induced blindness (AIB). In the experiment, participants judged whether they perceived a target stimulus and rated the confidence they had in their perceptual judgment, while their eye movements and pupil sizes were recorded. We found that not only perceptual decision but also perceptual confidence can be separately decoded from the eye movement and pupil size. We discuss the potential of this technique with regard to assessing visual awareness in future neuroimaging experiments.

リンク情報
DOI
https://doi.org/10.3389/fpsyg.2022.942859
URL
https://www.frontiersin.org/articles/10.3389/fpsyg.2022.942859/full
ID情報
  • DOI : 10.3389/fpsyg.2022.942859
  • eISSN : 1664-1078

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